<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="css/bootstrap.min.css">
    <title>超出隐藏</title>
    <style>
        div:nth-child(3){
            height: 50px;
            background: pink;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="row">
            <div col-xs-3>1</div>
            <div col-xs-3>2</div>
            <div col-xs-3>我会消失的！</div>
            <div col-xs-3>4</div>
        </div>
    </div>
</body>
</html>